nashorn/samples/for_each.js
author erikj
Thu, 08 Jun 2017 16:36:06 +0200
changeset 45451 2d500ccfa3b5
parent 26067 b32ccc3a76c9
permissions -rw-r--r--
8181788: Unable to build JDK10 on SPARC-M8 machines Reviewed-by: tbell

/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

// nashorn supports for..each extension supported
// by Mozilla. See also
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for_each...in

var strs = [ "hello", "world" ];
for each (str in strs)
    print(str);

// create a java int[] object
var JArray = Java.type("int[]");
var arr = new JArray(10);

// store squares as values
for (i in arr)
    arr[i] = i*i;

// for .. each on java arrays
print("squares");
for each (i in arr)
    print(i);

var System = Java.type("java.lang.System");

// for..each on java Iterables
// print System properties as name = value pairs
print("System properties");
for each (p in System.properties.entrySet()) {
    print(p.key, "=", p.value);
}

// print process environment vars as name = value pairs
print("Process environment");
for each (e in System.env.entrySet()) {
    print(e.key, "=", e.value);
}